# Why supersymmetry can only be verified in high energy level?

I'm wondering why supersymmetry can only be verified in high energy level,can we check supersymmetry in low energy physics?

• not sure why this is getting downvoted, the question should be expanded, but it's a pretty reasonable question – 4xion Jul 1 at 0:44

It can! The question isn't very specific, so I'll only answer broadly. Of course it all depends on what you mean by high and low energies, but many naive supersymmetric models you might write down will affect low-energy physics. If your model predicts that the proton will decay quickly, or that a new particle will be created if you collide two electrons together at 1 GeV, then it's easy to test. But experiments have found that the proton lifetime must be long (greater than $$10^{34}$$ years), and we know the particles produced by electron scattering at these energies.
• For 3), you don't need to wait $10^{34}$ years, you can take $10^{34}$ protons (I think this is about the number in Super-Kamiokande), and by not observing anything, you can put statistical bounds on the proton lifetime – 4xion Jul 2 at 4:55